摘要
雷达观测表明对流云中降水的脉动很大。本文用最大熵谱法分析雷达观测资料,发现暖对流云中降水的脉动周期只有一个,约在20分钟左右;而冷对流云中降水的脉动周期却有两个,大的脉动周期约在20至30分钟,小的周期约在11至15分钟。本文并讨论了降水脉动双周期的成因。
The precipitation fluctuation in convective clouds was further observed by radar in June 1984. Through the maximum entroPy method the radar data are analysed, showing that precipitation in warm convective clouds has 0nly one fluctuation in the period of about 20 minutes while that in the cold convective clouds comprises two oscillations with the bigger one in a 20-30 minute period and the smaller in an 11-15 period. The conclusions given in this, paper need more observational data to support.
出处
《南京气象学院学报》
CSCD
1990年第1期50-56,共7页
Journal of Nanjing Institute of Meteorology
